Add Android.bp and TEST_MAPPING am: dd4ec24ddb am: 6e84b0707b am: 49a769d01c am: e12500a760

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/structopt-derive/+/1330173

Change-Id: I699ba8f8d69a79b571c41a452ff6f9d2bbdffd52